CN103124161A - Signal source circuit based on oscillator and filter - Google Patents
Signal source circuit based on oscillator and filter Download PDFInfo
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- CN103124161A CN103124161A CN2012102738694A CN201210273869A CN103124161A CN 103124161 A CN103124161 A CN 103124161A CN 2012102738694 A CN2012102738694 A CN 2012102738694A CN 201210273869 A CN201210273869 A CN 201210273869A CN 103124161 A CN103124161 A CN 103124161A
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Abstract
The invention discloses a signal source circuit based on an oscillator and a filter. The signal source includes an oscillator U 1 and a filter U 2, wherein the oscillator U 1 includes 16 pins and the filter U 2 includes 8 pins. A pin 4 of the oscillator U 1 is connected with a pin 8 of the filter U 2. A pin 9 of the oscillator U 1 is connected with a pin 1 of the filter U 2. A capacitor C 1 and a resistor R 1 in series are connected between the pin 9 of the oscillator U 1 and a pin 11 of the oscillator U 1. A slide rheostat RP is connected with a pin 10 of the oscillator U 1. A pin 3 of the filter U 2 and a pin 4 of the filter U 2 are connected with ground. A capacitor C 3 and a resistor R 4 in parallel are connected between a pin 6 of the filter U 2 and a grounding end. A pin 16 of the oscillator U 1 and a pin 7 of the filter U 2 are connected with a high electrical level. A pin 8 of the oscillator U 1and a pin 12 of the oscillator U 1 are connected with ground meanwhile. A signal source circuit structure is capable of acquiring less distortion and continuous frequency signals and convenient to adjust output frequency.
Description
Technical field
The present invention relates to the signal source field, specifically a kind of signal source circuit based on oscillator and filter.
Background technology
Signal source generally also is understood to signal generator.To the widespread demand of various types of signal generator and developing rapidly of electronic technology, impel the signal generator kind to increase along with electronic measurements and other department, performance improves.Now, many signal generators are with microprocessor, because possessed self-correcting, self check, automatic trouble diagnosis and the functions such as automatic waveform formation and correction.Filter is a kind of device that is used for eliminating jamming incoherent signal, obtains pure direct current with inputing or outputing through filtration.To the circuit that frequency or the frequency beyond this frequency of characteristic frequency are carried out effective filtering, be exactly filter, its function obtains exactly a characteristic frequency or eliminates a characteristic frequency.At present, general signal source exists distortion larger, the discontinuous problem of frequency, and simultaneously, the scope of output frequency also is difficult for regulating.
Summary of the invention
The purpose of this invention is to provide the signal source circuit based on oscillator and filter that a kind of distortion is little, frequency is continuous.
the present invention is that the technical solution problem is achieved through the following technical solutions: a kind of signal source circuit based on oscillator and filter, comprise oscillator U1 and filter U2, oscillator U1 comprises 16 pins, filter U2 comprises 8 pins, the pin 4 of described oscillator U1 is connected with the pin 8 of filter U2, the pin 9 of oscillator U1 is connected with the pin 1 of filter U2, be connected with capacitor C 1 and the resistance R 1 of series connection between the pin 9 of oscillator U1 and pin 11, be connected with slide rheostat RP on the pin 10 of oscillator U1, the pin 3 of described filter U2 and pin 4 ground connection, be connected with capacitor C in parallel 3 and resistance R 4 between the pin 6 of filter U2 and earth terminal, the pin 16 of oscillator U1 is connected high level with the pin 7 of filter U2, the pin 8 of oscillator U1 and pin 12 be ground connection simultaneously.
Be connected with resistance R 2, resistance R 3 and the capacitor C 2 of connecting between the pin 4 of described oscillator U1 and earth terminal, the pin 8 of filter U2 is connected between resistance R 2, resistance R 3.
Be connected with capacitor C 4 between the pin 8 of described oscillator U1 and pin 16.
Be connected with resistance R 5 between described capacitor C 3 and high level.
The model of described oscillator U1 is CD4060, and the model of filter U2 is TLC04.
CD4060 is comprised of an oscillator and 14 grades of binary string linage-counter positions, and the structure of oscillator can be RC or crystal oscillating circuit, and when CR was high level, it is invalid that counter O reset and oscillator use, and all counter bit are master-slave flip-flop.Trailing edge counter at CP1 (CP0) is counted with binary system.
TLC04 comprises 8 pins, and 1 pin is input end of clock, and 2 pin are clock resistance terminal, and 3 pin are level mobile terminals, and 4 pin are negative supply inputs, and 5 pin are filter outputs, and 6 pin are earth terminals, and 7 pin are positive supply inputs, and 8 pin are filter input ends.The stability of the cut-off frequency of TLC04 is only relevant to clock frequency stability, and the cut-off frequency clock is adjustable, and its clock one cut-off frequency is than being 50:1.
The present invention compared with prior art has the following advantages and beneficial effect:
(1) the present invention adopts the RC oscillator that CD4060 consists of to produce the required clock signal of TLC04, and this clock signal enters filter TLC04 after the decay of 64 frequency divisions and resistance R 2, R3, can export thus low distortion, the continuous sine wave of frequency.
(2) the present invention can adjust output frequency by regulating slide rheostat RP, and simultaneously, the value that changes capacitor C 1 can change output area, makes like this adjusting of frequency become and is easy to.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited to this.
Embodiment:
as shown in Figure 1, the present invention includes oscillator U1 and filter U2, oscillator U1 comprises 16 pins, filter U2 comprises 8 pins, the pin 4 of oscillator U1 is connected with the pin 8 of filter U2, the pin 9 of oscillator U1 is connected with the pin 1 of filter U2, be connected with capacitor C 1 and the resistance R 1 of series connection between the pin 9 of oscillator U1 and pin 11, be connected with slide rheostat RP on the pin 10 of oscillator U1, the pin 3 of filter U2 and pin 4 ground connection, be connected with capacitor C in parallel 3 and resistance R 4 between the pin 6 of filter U2 and earth terminal, the pin 16 of oscillator U1 is connected high level with the pin 7 of filter U2, the pin 8 of oscillator U1 and pin 12 be ground connection simultaneously.
Be connected with resistance R 2, resistance R 3 and the capacitor C 2 of connecting between the pin 4 of the oscillator U1 of the present embodiment and earth terminal, the pin 8 of filter U2 is connected between resistance R 2, resistance R 3.
Be connected with capacitor C 4 between the pin 8 of the oscillator U1 of the present embodiment and pin 16.
Be connected with resistance R 5 between the capacitor C 3 of the present embodiment and high level.
The model of the oscillator U1 of the present embodiment is CD4060, and the model of filter U2 is TLC04.
Operation principle of the present invention is: at first, the RC oscillator that CD4060 consists of produces the required clock signal of TLC04, this clock signal enters filter TLC04 after the decay of 64 frequency divisions and resistance R 2, R3, complete after filtering the signal output part output from filter TLC04., can adjust output frequency by regulating slide rheostat RP therebetween, simultaneously, the value that changes capacitor C 1 can change output area.
The selection situation of above-mentioned device is as follows:
Resistance R 1:100k Ω;
Resistance R 2:10k Ω;
Resistance R 3:10k Ω;
Resistance R 4:10k Ω;
Resistance R 5:10k Ω;
Slide rheostat RP:0 ~ 20k Ω;
Capacitor C 1:100pF;
Capacitor C 2:10 μ F;
Capacitor C 3:0.1 μ F;
Capacitor C 4:10 μ F.
As mentioned above, can realize well the present invention.
Claims (5)
1. signal source circuit based on oscillator and filter, it is characterized in that: comprise oscillator U1 and filter U2, oscillator U1 comprises 16 pins, filter U2 comprises 8 pins, the pin 4 of described oscillator U1 is connected with the pin 8 of filter U2, the pin 9 of oscillator U1 is connected with the pin 1 of filter U2, be connected with capacitor C 1 and the resistance R 1 of series connection between the pin 9 of oscillator U1 and pin 11, be connected with slide rheostat RP on the pin 10 of oscillator U1, the pin 3 of described filter U2 and pin 4 ground connection, be connected with capacitor C in parallel 3 and resistance R 4 between the pin 6 of filter U2 and earth terminal, the pin 16 of oscillator U1 is connected high level with the pin 7 of filter U2, the pin 8 of oscillator U1 and pin 12 be ground connection simultaneously.
2. a kind of signal source circuit based on oscillator and filter according to claim 1, it is characterized in that: be connected with resistance R 2, resistance R 3 and the capacitor C 2 of connecting between the pin 4 of described oscillator U1 and earth terminal, the pin 8 of filter U2 is connected between resistance R 2, resistance R 3.
3. a kind of signal source circuit based on oscillator and filter according to claim 1, is characterized in that: be connected with capacitor C 4 between the pin 8 of described oscillator U1 and pin 16.
4. a kind of signal source circuit based on oscillator and filter according to claim 1, is characterized in that: be connected with resistance R 5 between described capacitor C 3 and high level.
5. a kind of signal source circuit based on oscillator and filter according to claim 1, it is characterized in that: the model of described oscillator U1 is CD4060, the model of filter U2 is TLC04.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102738694A CN103124161A (en) | 2011-11-18 | 2012-08-03 | Signal source circuit based on oscillator and filter |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110367978.8 | 2011-11-18 | ||
| CN201110367978 | 2011-11-18 | ||
| CN2012102738694A CN103124161A (en) | 2011-11-18 | 2012-08-03 | Signal source circuit based on oscillator and filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103124161A true CN103124161A (en) | 2013-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102738694A Pending CN103124161A (en) | 2011-11-18 | 2012-08-03 | Signal source circuit based on oscillator and filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103124161A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532514A (en) * | 2012-07-03 | 2014-01-22 | 四川蓝讯宝迩电子科技有限公司 | Filter circuit based on wave filter |
| CN103580608A (en) * | 2013-09-11 | 2014-02-12 | 昆山新金福精密电子有限公司 | Adjustable signal source circuit |
-
2012
- 2012-08-03 CN CN2012102738694A patent/CN103124161A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 余圣发等: "单片机开关电容滤波器TLC04原理与应用", 《国外电子元器件》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532514A (en) * | 2012-07-03 | 2014-01-22 | 四川蓝讯宝迩电子科技有限公司 | Filter circuit based on wave filter |
| CN103580608A (en) * | 2013-09-11 | 2014-02-12 | 昆山新金福精密电子有限公司 | Adjustable signal source circuit |
| CN103580608B (en) * | 2013-09-11 | 2016-08-31 | 昆山龙仕达电子材料有限公司 | A kind of adjustable signal source circuit |
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Application publication date: 20130529 |